I'd definitely say that GNE should go with ADL and leave Wrightbus. ADL offer a degree of flexibility in their bodywork either giving operators the choice of low power and fuel savings or a heavyweight chassis and engine for more power when required particularly where the Pronto is concerned.
It's a shame Wrightbus and Volvo has moved away from offering heavyweight chassis' and body combinations though because even though the likes of First and Arriva prefer lightweight vehicles across the board despite potential issues with reliability on some routes, the likes of GNE, EYMS, Transdev and other rural operators need power. Even Stagecoach have several Scania Euro 5 E400's on routes where the Cummins engines would struggle to cope.
RE: 2014 GNE Bus Order Predictions